The influence of strain rate and sample inhomogeneity on the moduli and strength of welded tuff [electronic resource].
- Published:
- Washington, D.C. : United States. Dept. of Energy, 1992.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy. - Physical Description:
- 17 pages : digital, PDF file
- Additional Creators:
- Sandia National Laboratories
United States. Department of Energy
United States. Department of Energy. Office of Scientific and Technical Information - Access Online:
- www.osti.gov
- Summary:
- A series of constant strain rate, unconfined compression experiments was performed on saturated welded tuff specimens collected from Busted Butte near Yucca Mountain, Nevada. Twenty specimens were loaded to failure at strain rates ranging from 10{sup −9}s{sup −1} to 10{sup −3}s{sup −1}, under ambient pressure and temperature conditions. The strength of the specimens showed a continuous decrease with decreasing strain rate between 10{sup −9} s{sup −1} and 10{sup −5} s{sup −1}. At the highest strain rate, 10{sup −3} s{sup −1}, strengths were less than those observed at 10{sup −5} s{sup −1}, likely due to hydrofracturing within the specimen at rapid loading rates. Reduction in strength, corresponding to the decrease in strain rate, is explained in terms of stress corrosion cracking. A detailed examination of six specimens tested at a strain rate of 10{sup −9} s{sup −1}, using acoustic wave velocities and CT scans, shows a correlation between the nature of the microstructure of the specimens and the observed strengths and elastic moduli.
- Subject(s):
- Note:
- Published through SciTech Connect.
12/31/1992.
"sand--92-2152c"
" conf-930644--6"
"DE93009626"
34. US symposium on rock mechanics, Madison, WI (United States), 27-30 Jun 1993.
Martin, R.J. III; Price, R.H.; Boyd, P.J.; Noel, J.S. - Funding Information:
- AC04-76DP00789
View MARC record | catkey: 14380569